Originally Posted by Cab_Burge
All the B1 and B1-MC pistons I've seen had really deep valve reliefs in them, all of them work
It would be helpful if somebody with B1 heads could post actual piston to valve clearance with known valve reliefs and cam specs, since that plays a big part in P2V.

1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1